Ivydene Gardens Extra Pages of Plants
Tree/Shrub Growth Shape List - Columnar

When selecting plants, you should start by using what you already have in the garden; especially mature trees and shrubs.
Growth Shape - The way a plant grows is genetically determined. How well individual plants grow varies with:

• availability of light,
• exposure to wind,
• and competition for food and space with other plants.

So, if you wish to see your plant at its best, rather than as a plant within a hedge effect, please give it room to grow to produce its natural growth habit.

Each tree or shrub will have one of the following growth shapes:-

Columnar

These diagrams come from a very useful book called
Van den Berk on Trees
ISBN 90-807408-8-8
written to answer customer's questions over 50 years to these Dutch growers.

Oval

Broad Fan-shaped/ Broad Vase-shaped

Rounded/ Spherical

Flattened Spherical

Narrow conical/ Narrow Pyramidal

Broad Conical/ Broad Pyramidal

Ovoid/ Egg-shaped

Broad Ovoid

Narrow Vase-shaped/ Inverted Ovoid

Fan-shaped/ Vase-shaped

Narrow Weeping

Broad Weeping

Single-stemmed palm, cyad, or similar tree

Wild Date Palm

Multi-stemmed palm, cyad, or similar tree

Areca Palm

The Deciduous Tree Gallery,
Evergreen Tree Gallery,
Deciduous Shrub Gallery and the Evergreen Shrub Gallery compare colour photographs of some of the following plants in thumbnail shape and larger size shape.

The following table lists these shapes for the trees in the Plant Name A to Z pages.

The overall amount of sunlight received depends on aspect, the direction your garden faces:-

North-facing gardens get the least light and can be damp

South-facing gardens get the most light

East-facing gardens get morning light

West-facing gardens get afternoon and evening light

Sun Aspect, Soil Type, Soil Moisture, Plant Type and Height of Plant are used in the Plant Photo Galleries in the comparison of thumbnail photos

Surface soil moisture is the water that is in the upper 10 cm (4 inches) of soil, whereas root zone soil moisture is the water that is available to plants, which is generally considered to be in the upper 200 cm (80 inches) of soil:-

• Wet Soil has Saturated water content of 20-50% water/soil and is Fully saturated soil
• Moist Soil has Field capacity of 10-35% water/soil and is Soil moisture 2–3 days after a rain or irrigation
• Dry Soil has Permanent wilting point of 1-25% water/soil and is Minimum soil moisture at which a plant wilts
• Residual water content of 0.1-10% water/soil and is Remaining water at high tension
• Available Water Capacity for plants is the difference between water content at field capacity and permanent wilting point

Sun Aspect:-

• Full Sun: At least 6 full hours of direct sunlight. Many sun lovers enjoy more than 6 hours per day, but need regular water to endure the heat.
• Part Shade: 3 - 6 hours of sun each day, preferably in the morning and early afternoon. The plant will need some relief from the intense late afternoon sun, either from shade provided by a nearby tree or planting it on the east side of a building.
  Dappled Sun - DS in Part Shade Column: Dappled sunlight is similar to partial shade. It is the sun that makes its way through the branches of a deciduous tree. Woodland plants and underplantings prefer this type of sunlight over even the limited direct exposure they would get from partial shade.
• Full Shade: Less than 3 hours of direct sunlight each day, with filtered sunlight during the rest of the day. Full shade does not mean no sun.

Acid Site - An acid soil has a pH value below 7.0. Clay soils are usually acid and retentive of moisture, requiring drainage. The addition of grit or coarse sand makes them more manageable. Peaty soil is acidic with fewer nutrients and also requires drainage.

Alkaline Soil - An alkaline soil has a pH value above 7.0. Soils that form a thin layer over chalk restrict plant selection to those tolerant of drought.

Bank / Slope problems include soil erosion, surface water, summer drought and poor access (create path using mattock to pull an earth section 180 degrees over down the slope). Then, stabilise the earth with 4 inches (10cms) depth of spent mushroom compost under the chicken wire; before planting climbers/plants through it.

Cold Exposed Inland Site is an area that is open to the elements and that includes cold, biting winds, the glare of full sun, frost and snow - These plants are able to withstand very low temperatures and those winds in the South of England.

Dust and Pollution Barrier - Plants with large horizontal leaves are particularly effective in filtering dust from the environment, with mature trees being capable of filtering up to 70% of dust particles caused by traffic. Plants can also help offset the pollution effects of traffic. 20 trees are needed to absorb the carbon dioxide produced by 1 car driven for 60 miles.

Front of Border / Path Edges - Soften edges for large masses of paving or lawn with groundcover plants. Random areas Within Paths can be planted with flat-growing plants. Other groundcover plants are planted in the Rest of Border.

Seaside Plants that deal with salt-carrying gales and blown sand; by you using copious amounts of compost and thick mulch to conserve soil moisture.

Sound Barrier - The sound waves passing through the plant interact with leaves and branches, some being deflected and some being turned into heat energy. A wide band of planting is necessary to achieve a large reduction in the decibel level.

Wind Barrier - By planting a natural windbreak you will create a permeable barrier that lets a degree of air movement pass through it and provide shelter by as far as 30 times their height downwind.

Woodland ground cover under the shade of tree canopies.

In the case of some genera and species, at least two - and sometimes dozens of - varieties and hybrids are readily available, and it has been possible to give only a selection of the whole range. To indicate this, the abbreviation 'e.g.' appears before the selected examples ( for instance, Centaurea cyanus e.g. 'Jubilee Gem'). If an 'e.g.' is omitted in one list, although it appears beside the same plant in other lists, this means that that plant is the only suitable one - or the only readily available suitable one - in the context of that particular list.

Chalky alkaline soils are derived from chalk or limestone with a pH of 7.1 or above.
Clay soils swell and shrink as they wet and dry.
Lime-Free soils are acidic and without chalk.
In poorly drained soils (50 % solid materials and about 50 % pore space), most of the pore space is filled with water for long periods of time, leaving too little air.
Light sandy soils dry out quickly and are low in nutrients.

To locate mail-order nursery for plants from the UK in this gallery try using search in RHS Find a Plant.

To locate plants in the European Union (EU) try using Search Term in Gardens4You and Meilland Richardier in France.

To locate mail-order nursery for plants from America in this gallery try using search in Plant Lust.

To locate plant information in Australia try using Plant Finder in Gardening Australia.

Soil Moisture:-

Sun Aspect:-

Plant Location:-

Common Name

with link to mail-order nursery in USA

Flower-ing Months

Flower-ing Colour

Plant Type
(Per = Perennial) with link to
Plant Description Page,
Companion Plants to help this plant Page,
Alpine Plant for Rock Garden Index Page
and/or
Native to UK WildFlower Plant in its Family Page in this website

Comment

AC = Acid Soil

AL = Alkaline Soil
 

AN = Any for Acid, Neutral or Alkaline Soil

FA = Grow for Flower Arrangers

FB = Front of Border
/ Path Edges

RB = Rest of Border

SP = Speciman

RG = Rock Garden

WP = Within Path

CL = Climber or Shrub grown against a wall or fence

BE = Bedding

GP = Grow in Pot / Container

HB = Grow in Hanging Basket

HE = Hedge
GC = Ground Cover
SC = Screening

TH =
Thorny Hedge

BG = Grow in Bog Area

BA = Grow on Bank / Slope

Soil:-

AN = Any Soil

SE = Seaside / Coastal Plants

CH = Chalk

EX = Cold Exposed Inland Site

CL = Clay

DP = Dust and Pollution Barrier

LF = Lime-Free (Acid Soil)

D = Dry

S = Full Sun

SO = Sound Barrier

PD = Poorly Drained
PE = Peaty

M = Moist

PS = Part Shade
DS = Dappled Sun

WI = Wind Barrier

LS = Light Sand

W = Wet

FS = Full Shade

WO = Woodland

AN

CH

CL

LF

PD

LS

D

M

W

S

PS

FS

AC

AL

AN

FA

FB
RB

BE

GP

HB

HE

SC

BG

BA

SE

EX

DP

SO

WI

WO

SP
RG

PE

DS

WP
CL

TH
GC

Columnar Tree or Shrub

AL

Berberis thunbergeii 'Helmond Pillar'

48 x 30
(120 x 75)

Deciduous Shrub